POWER
Rechargeable Lithium-Ion Battery for up to 20 hours of battery life between Micro USB charges.

Actual battery life will vary with use, settings and environmental conditions.

Serviceable battery (it can be replaced) Charge time: 2.5 hours

WIRELESS CAPABILITIES
Pair up to 8 Bluetooth® enabled source devices - Connect up to two source devices at the same time. Wirelessly play (stream) to 2 UE MEGABOOMs from one source. Mobile range of play is up to 30m (100 ft). NFC (passive) enabled - (works with active NFC enabled source devices * Android Jellybean and higher).

Welcome to the world of Ultimate Ears. Hear your music like never before with Ultimate Ears WONDERBOOM™, the super-portable Bluetooth® speaker with surprisingly big sound that is clear, crisp and full of big, beautiful bass. And even better, with 10 hours of playback and a completely waterproof design, you can take it anywhere. Go from picnics in the park to binge-watching shows with furry friends; from the beach to the shower and back without missing a beat. And if you need to really turn things up, quickly pair two together for even more sound.

Welcome to the world of Ultimate Ears. Hear your music like never before with Ultimate Ears WONDERBOOM™, the super-portable Bluetooth® speaker with surprisingly big sound that is clear, crisp and full of big, beautiful bass. And even better, with 10 hours of playback and a completely waterproof design, you can take it anywhere. Go from picnics in the park to binge-watching shows with furry friends; from the beach to the shower and back without missing a beat. And if you need to really turn things up, quickly pair two together for even more sound.